Lecturer Ali Fadhil Mohammed published a scientific paper titled “Sensing Aspects of Hybrid SERS Sensors HO-Si Pillars and SiQDs Integrated with Gold Nanoparticles: A Comparative Study.” This comparative study examines the characteristics and sensitivity of hybrid SERS sensors based on silicon nanostructures (horizontal silicon pillars and silicon quantum dots) integrated with gold nanoparticles.
The paper was published in the Pure Sciences International Journal of Kerbala. The research aimed to fabricate and study two types of hybrid SERS sensors by integrating gold nanoparticles with two different types of silicon nanostructures: horizontal silicon pillars (HO-Si) and silicon quantum dots (SiQDs), using laser-catalyzed etching technology.
The study concluded that the type of nanostructure plays a crucial role in sensor performance, with SiQDs sensors significantly outperforming others in terms of signal intensity, low detection limit, and reproducibility. This is attributed to the high density of hot spots and the larger surface area provided by this structure.
The study also demonstrated the potential for developing highly sensitive, low-cost sensors capable of detecting very low concentrations of chemicals, making them promising for environmental, medical, and precision chemical analysis applications.
